CentOS 7 Installation - No Local Disks detected

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rohan7
Posts: 15
Joined: 2019/11/13 11:45:34

CentOS 7 Installation - No Local Disks detected

Post by rohan7 » 2020/01/14 12:22:25

I know this issue has been posted quite a lot on the forum but I am still having issues during installation where local disks are not detected.

Boot mode is set to UEFI and SATA setting in BIOS is set to AHCI.

Attached is the output of

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lsblk
Image

Running

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dmraid -r -E /dev/sda
and

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dmraid -r -E /dev/sdb
results in ERROR - ERROR -ERROR

Any ideas what could be wrong here? These disks initially had Ubuntu installed on them.
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rohan7
Posts: 15
Joined: 2019/11/13 11:45:34

Re: CentOS 7 Installation - No Local Disks detected

Post by rohan7 » 2020/01/14 13:40:58

Looks like DMRAID was setup and hence the disks were not showing during installation. Performed the following and the issue is now fixed,

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DEVICE=/dev/sda
# dd if=/dev/zero of=$DEVICE bs=512 seek=$(( $(blockdev --getsz $DEVICE) - 1024 )) count=1024
Did the same for

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/dev/sdb

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dmraid -r

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no raid disks

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